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← GeographyWhich outcome occurs when subsurface pressure exceeds summit vent capacity during slow lava dome growth?
A)Exfoliation via pressure release fracturing
B)Localized pyroclastic flow generation✓
C)Groundwater supply experiences massive salination
D)Increased regional metamorphic rock production
💡 Explanation
Localized pyroclastic flow will be generated because over-pressurization leads to explosive lateral dome collapse, driven by volatile exsolution; therefore pyroclastic surge occurs, rather than simple exfoliation controlled by weathering processes alone.
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